横向干货补给系统高架索的非线性动力学研究

项目名称： 横向干货补给系统高架索的非线性动力学研究

项目编号： No.11302258

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 数理科学和化学

项目作者： 何学军

作者单位： 中国人民解放军海军工程大学

项目金额： 22万元

中文摘要： 由于受海况等环境因素影响，高架索作为承受货物重量和系统张力补偿控制构件，在横向补给作业过程中伴随着大量、复杂的振动，严重影响了补给作业的安全性、稳定性。目前尚未建立横向补给系统高架索的动力学理论研究体系，制约了相关装备研发进程。课题拟考虑高架索倾斜角、货物摆动、索端运动等因素的影响，基于Hamilton理论完善系统的3类非线性动力学模型，结合Galerkin截断与多尺度法对模型进行渐近分析。在此基础上研究系统在典型内共振下的参激振动、强迫振动、参激与强迫耦合振动等情况下的动力学响应特性；开展高余维局部分岔研究。确定影响系统振动特性的主要物理参数，力求弄清系统非线性动力学行为演化的基本规律。项目的开展不仅可以为提高横向干货补给装备作业的稳定性、提升补给效能及优化系统控制等相关技术攻关提供必要的理论依据，而且可以为解决工程中的客、货运索道等类似系统中的动力学问题提供参考。

中文关键词： 非线性动力学；多尺度方法；Galekin离散；分岔；高架索

英文摘要： Being load bearing and control element of tension compensation of alongside replenishment system for solid cargo at sea, there were complicated oscillations in the highline system during transportation due to the influence of state of the sea and other factors. These oscillations influenced the security, stability and efficiency of transportation. Theoretical study of dynamics of the highline system has been not built, which restricted the development of correlated equipment. Considering the influence of inclination angle of the highline, the sway of cargo, the mothion of the highline end, three kind of nonlinear dynamic models of the highline would be formulated by Hamilton principle, these models would be analysed by multi-scale method and Galerkin truncation. The dynamic behavior of classical internal resonant of the highline with parametric excitation, forced excitation, parametric and forced excitation would be analyzed. Local bifurcation will be investigated, the main factor which influenced the dynamic behavior of the highline system woud be found, in order to make clear the evolution of nonlinear dynamic behavior of the highline. The research could not only provide necessary theoretical basis for the key technology of enhancing the stability and the operation ability of alongside replenishment syste

英文关键词： nonlinear dynamics；multi-scale method；alerkin method；bifurcation；highline